Portable respirator



FIG. 1 is a perspective view of a portable respirator showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a bottom end view thereof;

FIG. 6 is a front end view thereof; and

FIG. 7 is a bottom plan view thereof.

The mirror and mount shown in broken lines in FIG. 1 are for illustrative purposes only and do not form part of my claimed design. 

The ornamental design for a portable respirator, as shown and described. 